Robust Sliding Mode Control of the Permanent Magnet Synchronous Motor with an Improved Power Reaching Law

Energies

Xin Ba¹  Zhenjie Gong¹  Chengning Zhang¹  Youguang Guo² 

[1] National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing 100081, China;School of Electrical and Data Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia;

关键词: permanent magnet synchronous motor;    sliding mode control;    chattering;    robustness;   

DOI  :  10.3390/en15051935

来源: DOAJ

【 摘 要 】

To improve the suppression ability of uncertain disturbance of the sliding mode control driving system of the surface-mounted permanent magnet synchronous motor (SPMSM) and to reduce the chattering of the control output, a robust sliding mode control strategy with an improved power reaching law (IPRL) is proposed in this paper. Compared with the traditional fast power reaching law (FPRL), the IPRL incorporates the sum of the power terms of the system state variables into the conventional power terms, and uses hyperbolic tangent saturation function to replace the piecewise function, which can effectively suppress the sliding mode chattering and improve the convergence speed of the system state to the sliding mode surface. Furthermore, the robust sliding mode speed controller and sliding mode current controller of the SPMSM are designed separately with the IPRL, and detailed simulation verification is carried out to reveal the effectiveness of the IPRL. Simulation and experimental results show that compared with the FPRL, the proposed IPRL can reduce the inherent chattering phenomenon in sliding mode control, and the IPRL-based speed and current control strategy can effectively improve the dynamic performance and robustness of the system.

【 授权许可】

Unknown